Foster Bay Recreation Area Weather Forecast

    • 20
    • 41

    Mostly Sunny

    • 27
    • 39

    Decreasing Clouds

    • 26
    • 49

    Partly Sunny

    • 31
    • 41

    Mostly Cloudy

    • 33
    • 48

    Mostly Sunny

    • 25
    • 52

    Partly Sunny

    • 21
    • 44

    Partly Sunny

Today 20 Dec Stanley

Sunny. Highs in the lower 40s. North Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 20 Dec Stanley

Mostly clear. Lows around 20. South Winds 5 to 10 Mph.

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Foster Bay Recreation Area Temperature Statistics

December Temperature

Pierre, Pierre Regional Airport (44.7 miles)

  • Lowest 14 December, 2025

    -9.9 °F

  • Average December

    24.4 °F

  • Highest 17 December, 2025

    55 °F

Climate (2020–Present)

Pierre, Pierre Regional Airport (44.7 miles)

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  • Average Low 2020–2025

    37 °F

  • Average 2020–2025

    48.8 °F

  • Average High 2020–2025

    61.2 °F
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